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smart thumbtack / Smart thumbtack

smart   thumbtack
smart   thumbtack

Typically, thumbtacks will pierce the paper, and damaged some of the information is not allowed. And this pushpin designed to "s' shape, you can easily grip the important paper materials, to avoid damage. Meanwhile, thumbtacks transparent material, people can easily see the need to peg the place. Pushpin" s "shape there are curved on top flips shape, in order to facilitate pull thumbtack

University

Guangdong Ocean University

Guangdong Ocean University
Zhanjiang, China